diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5fd4162..86cca23 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,18 @@
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.5.2] - 2021.10.06
+
+### Fixed
+
+- `Truemail::RegexConstant::REGEX_EMAIL_PATTERN` behaviour with double `@` in email. Thanks [@your-favorite-dev](https://github.com/your-favorite-dev) for bug report.
+
+### Updated
+
+- Updated tests
+- Updated gem development dependencies
+- Updated gem version
+
 ## [2.5.1] - 2021.10.01
 
 ### Updated
diff --git a/Gemfile.lock b/Gemfile.lock
index 909e491..a6755c0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    truemail (2.5.1)
+    truemail (2.5.2)
       simpleidn (~> 0.2.1)
 
 GEM
@@ -26,7 +26,7 @@ GEM
     fasterer (0.9.0)
       colorize (~> 0.7)
       ruby_parser (>= 3.14.1)
-    ffaker (2.19.0)
+    ffaker (2.20.0)
     hashdiff (1.0.1)
     iniparse (1.5.0)
     json (2.5.1)
@@ -70,7 +70,7 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.10.0)
     rspec-support (3.10.2)
-    rubocop (1.22.0)
+    rubocop (1.22.1)
       parallel (~> 1.10)
       parser (>= 3.0.0.0)
       rainbow (>= 2.2.2, < 4.0)
@@ -119,14 +119,14 @@ DEPENDENCIES
   bundler-audit (~> 0.9.0.1)
   dns_mock (~> 1.4, >= 1.4.2)
   fasterer (~> 0.9.0)
-  ffaker (~> 2.19)
+  ffaker (~> 2.20)
   json_matchers (~> 0.11.1)
   overcommit (~> 0.58.0)
   pry-byebug (~> 3.9)
   rake (~> 13.0, >= 13.0.6)
   reek (~> 6.0, >= 6.0.6)
   rspec (~> 3.10)
-  rubocop (~> 1.22)
+  rubocop (~> 1.22, >= 1.22.1)
   rubocop-performance (~> 1.11, >= 1.11.5)
   rubocop-rspec (~> 2.5)
   simplecov (~> 0.17.1)
diff --git a/lib/truemail/core.rb b/lib/truemail/core.rb
index 004ea13..2ba62c0 100644
--- a/lib/truemail/core.rb
+++ b/lib/truemail/core.rb
@@ -20,7 +20,7 @@ def initialize(arg_value, arg_name)
 
   module RegexConstant
     REGEX_DOMAIN = /[\p{L}0-9]+([\-.]{1}[\p{L}0-9]+)*\.\p{L}{2,63}/i.freeze
-    REGEX_EMAIL_PATTERN = /(?=\A.{6,255}\z)(\A([\p{L}0-9]+[\W\w]*)@(#{REGEX_DOMAIN})\z)/.freeze
+    REGEX_EMAIL_PATTERN = %r{(?=\A.{6,255}\z)(\A([\p{L}0-9]+[\w\p{L}.+!~,'&%#*^`{}|\-/?=$]*)@(#{REGEX_DOMAIN})\z)}.freeze
     REGEX_DOMAIN_PATTERN = /(?=\A.{4,255}\z)(\A#{REGEX_DOMAIN}\z)/.freeze
     REGEX_DOMAIN_FROM_EMAIL = /\A.+@(.+)\z/.freeze
     REGEX_SMTP_ERROR_BODY_PATTERN = /(?=.*550)(?=.*(user|account|customer|mailbox)).*/i.freeze
diff --git a/lib/truemail/version.rb b/lib/truemail/version.rb
index ff0474d..6bda452 100644
--- a/lib/truemail/version.rb
+++ b/lib/truemail/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Truemail
-  VERSION = '2.5.1'
+  VERSION = '2.5.2'
 end
diff --git a/spec/truemail/core_spec.rb b/spec/truemail/core_spec.rb
index 5ccbb16..5eaf8a0 100644
--- a/spec/truemail/core_spec.rb
+++ b/spec/truemail/core_spec.rb
@@ -28,6 +28,8 @@
   describe 'Truemail::RegexConstant::REGEX_EMAIL_PATTERN' do
     subject(:regex_pattern) { described_class::REGEX_EMAIL_PATTERN }
 
+    let(:special_chars) { %w[- _ . + ! ~ , ' & % # $ * / = ? ^ ` { | }] }
+
     it 'allows from 6 to 255 chars' do
       expect(
         regex_pattern.match?(Truemail::GenerateEmailHelper.call(size: :min))
@@ -67,14 +69,24 @@
 
     it 'allows special chars' do
       expect(
-        regex_pattern.match?(Truemail::GenerateEmailHelper.call(symbols: %w[- _ . + ! ~ , ' & % # $ * / = ? ^ ` { | }]))
+        regex_pattern.match?(
+          Truemail::GenerateEmailHelper.call(symbols: special_chars)
+        )
       ).to be(true)
     end
 
     it 'not allows special chars for one char username' do
       expect(
         regex_pattern.match?(
-          Truemail::GenerateEmailHelper.call(size: :min, invalid_email_with: %w[- _ . + ! ~ , ' & % # $ * / = ? ^ ` { | }])
+          Truemail::GenerateEmailHelper.call(size: :min, invalid_email_with: special_chars)
+        )
+      ).to be(false)
+    end
+
+    it 'not allows double @ char in email' do
+      expect(
+        regex_pattern.match?(
+          Truemail::GenerateEmailHelper.call(invalid_email_with: %w[@])
         )
       ).to be(false)
     end
diff --git a/truemail.gemspec b/truemail.gemspec
index 2c0f405..e200255 100644
--- a/truemail.gemspec
+++ b/truemail.gemspec
@@ -37,14 +37,14 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'bundler-audit', '~> 0.9.0.1'
   spec.add_development_dependency 'dns_mock', '~> 1.4', '>= 1.4.2'
   spec.add_development_dependency 'fasterer', '~> 0.9.0'
-  spec.add_development_dependency 'ffaker', '~> 2.19'
+  spec.add_development_dependency 'ffaker', '~> 2.20'
   spec.add_development_dependency 'json_matchers', '~> 0.11.1'
   spec.add_development_dependency 'overcommit', '~> 0.58.0'
   spec.add_development_dependency 'pry-byebug', '~> 3.9'
   spec.add_development_dependency 'rake', '~> 13.0', '>= 13.0.6'
   spec.add_development_dependency 'reek', '~> 6.0', '>= 6.0.6'
   spec.add_development_dependency 'rspec', '~> 3.10'
-  spec.add_development_dependency 'rubocop', '~> 1.22'
+  spec.add_development_dependency 'rubocop', '~> 1.22', '>= 1.22.1'
   spec.add_development_dependency 'rubocop-performance', '~> 1.11', '>= 1.11.5'
   spec.add_development_dependency 'rubocop-rspec', '~> 2.5'
   spec.add_development_dependency 'simplecov', '~> 0.17.1'